| 1 | // SPDX-License-Identifier: GPL-2.0-only |
|---|---|
| 2 | /* |
| 3 | * Copyright 2022, Athira Rajeev, IBM Corp. |
| 4 | */ |
| 5 | |
| 6 | #include <stdio.h> |
| 7 | #include "../event.h" |
| 8 | #include "../sampling_tests/misc.h" |
| 9 | |
| 10 | /* The processor's L1 data cache was reloaded */ |
| 11 | #define EventCode1 0x21C040 |
| 12 | #define EventCode2 0x22C040 |
| 13 | |
| 14 | /* |
| 15 | * Testcase for group constraint check |
| 16 | * when using events with same PMC. |
| 17 | * Multiple events in a group shouldn't |
| 18 | * ask for same PMC. If so it should fail. |
| 19 | */ |
| 20 | |
| 21 | static int group_constraint_repeat(void) |
| 22 | { |
| 23 | struct event event, leader; |
| 24 | |
| 25 | /* Check for platform support for the test */ |
| 26 | SKIP_IF(platform_check_for_tests()); |
| 27 | |
| 28 | /* |
| 29 | * Two events in a group using same PMC |
| 30 | * should fail to get scheduled. Usei same PMC2 |
| 31 | * for leader and sibling event which is expected |
| 32 | * to fail. |
| 33 | */ |
| 34 | event_init(e: &leader, EventCode1); |
| 35 | FAIL_IF(event_open(e: &leader)); |
| 36 | |
| 37 | event_init(e: &event, EventCode1); |
| 38 | |
| 39 | /* Expected to fail since sibling event is requesting same PMC as leader */ |
| 40 | FAIL_IF(!event_open_with_group(e: &event, group_fd: leader.fd)); |
| 41 | |
| 42 | event_init(e: &event, EventCode2); |
| 43 | |
| 44 | /* Expected to pass since sibling event is requesting different PMC */ |
| 45 | FAIL_IF(event_open_with_group(e: &event, group_fd: leader.fd)); |
| 46 | |
| 47 | event_close(e: &leader); |
| 48 | event_close(e: &event); |
| 49 | |
| 50 | return 0; |
| 51 | } |
| 52 | |
| 53 | int main(void) |
| 54 | { |
| 55 | return test_harness(group_constraint_repeat, "group_constraint_repeat"); |
| 56 | } |
| 57 |